How to Remove NIS+

If you wish to remove NIS+, you should run the following commands on
all of your NIS+ machines:

# cp /etc/nsswitch.files /etc/nsswitch.conf
# /etc/init.d/rpc stop
# rm -f /etc/.rootkey
# rm -rf /var/nis/*
# /etc/init.d/rpc start

It is suggested that you start with the clients, and do the servers
last.